Significant improvement of high voltage cycling behavior AlF3-coated LiCoO2 cathode

被引：284

作者：

Sun, Y. -K. ^{[1
]}

Han, J. -M.

Myung, S. -T.

Lee, S. -W.

Amine, K.

机构：

[1] Hanyang Univ, Dept Chem Engn, Ctr Informat & Commun Mat, Seoul 133791, South Korea

[2] VK Corp, Kyonggi Do 450090, South Korea

[3] Argonne Natl Lab, Chem Engn Div, Electrochem Technol Program, Argonne, IL 60439 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2006年 / 8卷 / 05期

关键词：

AlF3; coating; cathode materials; impedance; lithium secondary batteries;

D O I：

10.1016/j.elecom.2006.03.040

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

To improve the capacity retention of LiCoO2 at 4.5 V cut-off cycling, the AlF3 as new coating material was introduced. The AlF3-coated LiCoO2 showed no large difference in the bulk structure and a uniform AlF3-coating layer whose thickness is of about 10 nm covers LiCoO2 particles, as confirmed by transmission electron microscopy. The AlF3-coated LiCoO2 delivered the similar initial discharge capacity to pristine LiCoO2 to 4.5 V versus Li. Surprisingly, the capacity retention and rate capability were greatly enhanced comparing to the pristine LiCoO2. Ac-impedance results showed that the AlF3-coated LiCoO2 has stable charge transfer resistance (R-ct) on cycling. Reduced Co dissolution was also seen for the AlF3-coated LiCoO2. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：821 / 826

页数：6

共 19 条

[1] Cobalt dissolution in LiCoO2-based non-aqueous rechargeable batteries [J].

Amatucci, GG ;

Tarascon, JM ;

Klein, LC .

SOLID STATE IONICS, 1996, 83 (1-2) :167-173

[2] Surface characterization of electrodes from high power lithium-ion batteries [J].

Andersson, AM ;

Abraham, DP ;

Haasch, R ;

MacLaren, S ;

Liu, J ;

Amine, K .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (10) :A1358-A1369

[3] On the capacity fading of LiCoO2 intercalation electrodes:: the effect of cycling, storage, temperature, and surface film forming additives [J].

Aurbach, D ;

Markovsky, B ;

Rodkin, A ;

Levi, E ;

Cohen, YS ;

Kim, HJ ;

Schmidt, M .

ELECTROCHIMICA ACTA, 2002, 47 (27) :4291-4306

[4] Methods to obtain excellent capacity retention in LiCoO2 cycled to 4.5 V [J].

Chen, ZH ;

Dahn, JR .

ELECTROCHIMICA ACTA, 2004, 49 (07) :1079-1090

[5]

Cho J, 2001, ANGEW CHEM INT EDIT, V40, P3367, DOI 10.1002/1521-3773(20010917)40:18<3367::AID-ANIE3367>3.0.CO

[6]

2-A

[7] LiAlyCo1-yO2 (R(3)over-bar-m) intercalation cathode for rechargeable lithium batteries [J].

Jang, YI ;

Huang, BY ;

Wang, HF ;

Sadoway, DR ;

Ceder, G ;

Chiang, YM ;

Liu, H ;

Tamura, H .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (03) :862-868

[8] The effect of Al(OH)3 coating on the Li[Li0.2Ni0.2Mn0.6]O2 cathode material for lithium secondary battery [J].

Kang, YJ ;

Kim, JH ;

Lee, SW ;

Sun, YK .

ELECTROCHIMICA ACTA, 2005, 50 (24) :4784-4791

[9]

KWEON HJ, 1998, Patent No. 19980012005

[10] Improvement of degradation at elevated temperature and at high state-of-charge storage by ZrO2 coating on LiCoO2 [J].

Miyashiro, H ;

Yamanaka, A ;

Tabuchi, M ;

Seki, S ;

Nakayama, M ;

Ohno, Y ;

Kobayashi, Y ;

Mita, Y ;

Usami, A ;

Wakihara, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (02) :A348-A353

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